Alloy Steel Seamless Pipe AISI4140 /42CrMo4 Seamless Steel Pipe
SCH40 SCH80
AISI 4140 is a low steel alloy that consists of manganese,
molybdenum and chromium. AISI 4140 equivalent material & EN grades
are EN# is 1.7223, EN name is 42CrMo4, DIN is 41CrMo4, BS 970 is
708M40, UNI is 41CrMo4 and JIS is SCM 440. There are very few
grades of steel that have the capacity to match the usefulness and
the versatility of AISI 4140. Material properties of AISI 4140
include it having superb ductility, superior toughness and in
tempered condition or quenched condition, it shows excellent wear
resistance. AISI 4140 has a Density of 0.284 lb/in³ (7.85 g/cm3)
and it has a Melting Point of 2580 °F (1416 °C).
4140 steel uses are many because of its properties and
characteristics. AISI 4140 has high impact resistance, high fatigue
strength, superb torsional strength, excellent toughness and very
good abrasion. AISI 4140 has many applications such as connecting
rods, steel ejectors, sprockets, torsion bars, tool holders, steel
couplings, pump shafts, mold bases, holder blocks, forks, pinions,
chuck bodies, drill collars, bolsters, motor shafts, crow bars,
strippers, valves, fixtures, boring bars, lathe spindles, reamer
bodies, tool holders, rams, conveyor pins & rolls, crankshafts,
steel collets, milling spindles, steel conveyors and rolls, etc.
AISI 4140 steel tube corrosion resistance is excellent because of
the presence of molybdenum and chromium in it. The molybdenum in
AISI 4140 is very useful as it helps immensely in the resistance of
corrosion due to chlorides. The manganese that is present in AISI
4140 is extremely helpful as it acts like a deoxidizer and it also
increases the hardenability of the material. Plus, the manganese
that is present in AISI 4140 combines with sulfur and improves the
machinability of the material, also making the process of
carburizing much more effective.
4140 Steel Pipe Specification
| AISI 4140 Pipe Standard | AISI 4140, ASTM A519 (with IBR Test Certificate) |
| AISI 4140 Pipe Size | 1/2” NB to 36” NB |
| AISI 4140 Pipe Thickness | 3-12mm |
| AISI 4140 Pipe Schedules | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| AISI 4140 Pipe Origin | European, Japanese, Korean, US, Russian, Indian (Strictly No
Chinese Material) |
| AISI 4140 Pipe Tolerance | Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm |
| Craft | Cold rolled and Cold drawn |
| AISI 4140 Pipe Type | Seamless / ERW / Welded / Fabricated |
| AISI 4140 Pipe available in Form of | Round, Square, Rectangular, Hydraulic Etc. |
| AISI 4140 Pipe Length | Standard
Double &
In Cut length also. |
| AISI 4140 Pipe End | Plain End, Beveled End, Treaded |
| Specialized in | Large Diameter AISI 4140 Pipe |
| Additional Testing | NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2
SERVICE, IBR, etc. |
| Application | Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
AISI 4140 Tool Steel Pipe Equivalent
| Standard/ Grade | UNS | Temper | Specification |
|---|
| AISI 4130 Alloy Steel | UNS G41300 | N | MILT6736, AMS6360, AMS6371 |
| AISI 4340 Alloy Steel | UNS G43400 | | |
| AISI 4140 Alloy Steel | UNS G41400 | A, N, T | AMS6381 |
| AISI 8620 Alloy Steel | UNS G86200 | | |
| 15CDV6 | | T980, T1080 | AIR9160C, 1.7734.5, 1.7734.6 |
4140 Alloy Steel Pipe chemical composition
A519 4140 Alloy Steel Seamless Pipe Chemical Composition
Chemical composition % of A519 4140 Alloy Steel Seamless Pipe
| Element | Content (%) |
|---|
| Iron, Fe | 96.785 - 97.77 |
| Chromium, Cr | 0.80 - 1.10 |
| Manganese, Mn | 0.75 - 1.0 |
| Carbon, C | 0.380 - 0.430 |
| Silicon, Si | 0.15 - 0.30 |
| Molybdenum, Mo | 0.15 - 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
SAE 4140 Pipe mechanical properties
Physical Properties A519 4140 Grade Seamless Pipe
The following table shows the physical properties of AISI 4140
alloy steel.
| Properties | Metric | Imperial |
|---|
Density | 7.85 g/cm3 | 0.284 lb/in³ |
Melting point | 1416°C | 2580°F |
Mechanical Properties of A519 4140 Alloy Steel Seamless Pipe and
Tubes
The mechanical properties of AISI 4140 alloy steel are outlined in
the following table.
| Properties | Metric | Imperial |
|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (converted from Brinell hardness. Value below
normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
